74AHCT125D-Q100118

Buffers, Drivers, Receivers, Transceivers Overview

The 74AHCT125D-Q100,118 is a quad buffer and line driver featuring three-state outputs controlled by active-low output enable inputs. It operates within a supply voltage range of 4.5 V to 5.5 V and utilizes TTL input switching levels. The device is qualified to AEC-Q100 Grade 1 standards for automotive applications and supports an ambient temperature range from -40 °C to +125 °C. It is housed in a 14-lead SO plastic small outline package (SOT108-1) with a body width of 3.9 mm.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• Overvoltage tolerant inputs allowing operation in mixed voltage environments
• Schmitt-trigger action on all inputs for high noise immunity
• ESD protection exceeding 2000 V via Human Body Model and 1000 V via Charge Device Model

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive electronic systems requiring robust logic buffering
• Mixed voltage signal translation between TTL and CMOS domains
• Bus driver applications utilizing three-state control for data isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL-compatible input thresholds are required alongside wide operating voltage ranges. Ensure the design accommodates the specified propagation delays under expected load capacitance conditions. Confirm that the thermal dissipation requirements align with the derating curves provided for the SO14 package at elevated temperatures.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Nexperia 74AHC/AHCT125-Q100 family of quad buffers. It shares functional compatibility with other variants in the series but differs in input logic levels and packaging options. The D suffix specifically denotes the standard SO14 surface-mount package, distinguishing it from TSSOP or DHVQFN alternatives within the same product line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible substitutes include the 74AHC125D-Q100 variant, which offers identical functionality but utilizes CMOS input switching levels instead of TTL levels. Designers must verify input threshold compatibility when swapping between these two devices.